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39th Annual Guns and Ammo

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L-3 BTFP 39TH ANNUAL GUNS & AMMUNITION CONFERENCE. 2. Q: Do new weapons designs require new ... Used with cargo-dispensing, smoke, and illuminating projectiles ... – PowerPoint PPT presentation

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Title: 39th Annual Guns and Ammo


1
NDIA 39th Annual Guns and Ammunition
Conference Low Cost Solutions for Modern
Munitions EF Cooper Director, RD
2
  • Q Do new weapons designs require new fuzing /
    SAs?
  • A Yes, but not necessarily cutting edge or
    developmental technology
  • Cost
  • Reliability
  • Weight dimension
  • Environments

3
Low Cost Solutions for Modern Munitions
Contents
  • M762A1 or M577 Fuzing High Volume Product
    Building Block
  • PGMM
  • XM984
  • APKWS Block 1
  • Self Destruct Fuze

4
M762A1/M767A1 ET Fuze
Artillery Electronic Time Fuze
Commanders Award Winner Best TACOM-ARDEC
Producer
Multi-Year Contract (awarded 9/2001) 600,000 base
plus 100 option potential
  • Premier electronic-time artillery fuze
  • Designed for 105mm and 155mm artillery
  • Used with cargo-dispensing, smoke, and
    illuminating projectiles
  • Converts to M767A1 when used with an explosive
    booster for HE projectiles
  • 99 Acceptance 93 Industry

5
PGMM
Mechanical SA Solution selected by ARDEC,
Lockheed, ATK and Raytheon
6
PGMM
7
PGMM
Launch Setback
LCD
Second Environment Sensors
µC
User Interface
M762A1 ASIC
SA
Lead
Existing
Reserve Cell
Lucey Sw/ Dly Ckt
New Parts
Round Interface
Modified
User Interface
8
Side View of SA Design
Mechanical SA
Electrical Support Circuitry
9
SA Design
Slider (With Shear Nub)
Command Function Lock
Setback Lock
Detonator
10
XM984
11
XM984 Mortar Extended Range DPICM
Mortar Future Multifunction Electronic Fuze
  • M762 fuze technology
  • Two-fuze configuration
  • Separate timing requirements

12
APKWS Block -1
13
APKWS Block -1
  • 2.75 Rocket with a guidance target detection
    module
  • Needed a mechanical system reacting to launch to
    power up systems electronics
  • Answer an M577 mechanical fuze modification (40
    year design)
  • Withstands TV, drop, etc
  • Live firing trials 100
  • Low cost materials
  • Low cost production methods

14
Low Cost SDF for ICM Rounds
15
Pyrotechnic Self Destruct Fuze
Current Contract Requirements
  • 20-Year or better storage life
  • SDF function time ? 24 sec
  • Reliability
  • Primary Mode 95
  • SDF Mode 95
  • Hazardous Duds ? 1/500

16
Pyrotechnic Self Destruct Fuze
17
Pyrotechnic Self Destruct Fuze
M223E1 SDF Design Features
  • Based on M223 Fuze Design
  • Arming screw, weight, slider, housing, cover
  • Compatible with M42, M46 and M77 Grenades
  • SDF functions with or without spin
  • SDF is independent of primary mode.
  • All energetics are contained in slider
  • Stab ignitor, pyro delay, transfer element, M55
    detonator
  • Pyrotechnic delay is a standard mix
    (Tungsten/Barium Chromate/Potassium Perchlorate
    Composition (MIL-STD-82710))
  • Compatible with all existing LAP facilities

18
Pyrotechnic Self Destruct Fuze
Description of Applications
19
Pyrotechnic Self Destruct Fuze
Value Operational Effectiveness
  • TACOM-ARDEC self-destruct timing based upon
    statistical analysis of grenade fall times,
    various ranges for both M577 and M762 fuzed
    projectiles
  • Criteria established at minimum 24 seconds for
    self-destruct to preclude air bursts
  • TACOM-ARDEC 24 sec criteria ensures
  • 100 coverage for M762
  • M577 all ranges/all QEs _at_ a reasonable 97.7
  • L-3 BTFP design exceeds the TACOM-ARDEC standard
    of 24 seconds

20
Pyrotechnic Self Destruct Fuze
M864 Projectile Testing, Zone 8
21
Pyrotechnic Self Destruct Fuze
Summary
  • Today Mechanical/Pyro design exceeds contract
    design requirements (lt1)
  • L-3 BTFP SD Fuze
  • Developed in three years IRAD/Govt. funding
  • SDF compatible with current U.S. LAP facility
    requirements
  • Loadable Standard components and Technology
  • Affordable
  • Meets or exceeds 20-year shelf life
  • Reliable (100 in last test)
  • Pre-Production Engineering is the IPTs next step

22
Lessons Learned
  • Benefits of designs derived from production
    items
  • reduced development time
  • lower production costs
  • utility with tandem single warheads
  • no high voltage
  • batteries not needed in all applications
  • precedent cases with safety review boards
  • high 1st turn success rates
  • Pure electronics are not a panacea
  • Pyrotechnic and mechanical technologies provides
    reliable sensible solutions
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